To effectively reduce capacitor voltage ripple while suppressing an increase in capacitor volume and switching loss.SOLUTION: A monitor control device 1 includes a voltage command generation unit 15 that generates three-phase voltage commands Vu*, Vv*, and Vw*, and a gate signal generation unit 18 that pulse width modulates the three-phase voltage commands Vu*, Vv*, and Vw* and generates a gate signal to control the operation of an inverter 3. The voltage command generation unit 15 uses a zero-phase voltage based on the power factor of the AC power in an overmodulation region in which the modulation factor according to the voltage amplitude ratio of the DC power and the AC power exceeds a predetermined threshold value to adjust the three-phase voltage commands Vu*, Vv*, and Vw*.SELECTED DRAWING: Figure 2
【課題】キャパシタ体積やスイッチング損失の増加を抑えつつ、キャパシタ電圧リプルを効果的に低減する。【解決手段】モータ制御装置1は、三相電圧指令Vu*、Vv*、Vw*を生成する電圧指令生成部15と、三相電圧指令Vu*、Vv*、Vw*をパルス幅変調し、インバータ3の動作を制御するためのゲート信号を生成するゲート信号生成部18とを備える。電圧指令生成部15は、直流電力と交流電力との電圧振幅比に応じた変調率が所定のしきい値を超えた過変調領域において、交流電力の力率に基づく零相電圧を用いて三相電圧指令Vu*、Vv*、Vw*を調整する。【選択図】図2
MOTOR CONTROL DEVICE, MECHANICAL/ELECTRICAL INTEGRATED UNIT, BOOST CONVERTER SYSTEM, ELECTRIC VEHICLE SYSTEM, AND MOTOR CONTROL METHOD
モータ制御装置、機電一体ユニット、昇圧コンバータシステム、電動車両システム、およびモータ制御方法
2022-06-29
Patent
Elektronische Ressource
Japanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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